Renewing oil seal for flange shaft (left-side): Audi A6 C6

🧭 Before you start

Fits: Audi A6 C6 (4F, 2004–2011)

Don't miss

• The gearbox must not be placed down on ATF cooler or oil pan. — Remove flange shaft (right-side) .
• Thickness of shim has been measured to fit; the shim must not be replaced with another shim of different thickness.
• Push oil seal onto thrust piece with the protruding sealing lip on the oil seal facing towards the tool.

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. ⚠ The gearbox must not be placed down on ATF cooler or oil pan. — Remove flange shaft (right-side) .
2. Unscrew bolts on cover for final drive in the reverse sequence to the tightening sequence shown and remove cover together with outer race for tapered roller bearing and shim. [Note: Thickness of shim has been measured to fit; the shim must not be replaced with another shim of different thickness.]
3. Remove differential.
4. Remove tapered roller bearing outer race (1) for differential and shim (2) (behind outer race) from gearbox housing by hand. [Note: Thickness of shim has been measured to fit; the shim must not be replaced with another shim of different thickness.]
5. Remove flange shaft (left-side) .

6. Pull out oil seal. [Note: The oil seal extractor lever must be applied behind the two sealing lips of the oil seal. Do not position at outer circumference of oil seal as the contact surface in the gearbox housing could be damaged. Guide the lever carefully when removing the seal.]
7. Examine oil seal seat in gearbox housing for damage; reface surface if necessary.
8. Lightly lubricate outer circumference and sealing lip of oil seal with gear oil. [Note: Push oil seal onto thrust piece with the protruding sealing lip on the oil seal facing towards the tool.]
9. Drive in new oil seal as far as stop.
10. Insert shim (2) and tapered roller bearing outer race (1) for differential onto stop in gearbox housing by hand.
11. Renew O-ring (arrow).
12. Install differential in gearbox housing.
13. Lubricate shim and outer race for tapered roller bearing with gear oil and insert in front final drive cover as far as the stop.
14. Install cover for front final drive.
15. Tighten bolts (1) and (2) to 3 Nm. — 3 Nm (2.2 lb-ft)
16. Tighten bolts (1 ... 11) to specified torque in the sequence indicated.
17. Install flange shaft (left-side) .
18. Install flange shaft (right-side) .
19. Fill up gear oil in gearbox after repairs .

Other AUDI procedures

• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures
• Checking control unit voltage supply
• Testing knock sensors
• Testing solenoid valves for camshaft adjustment – Audi 2.8 ACK
• Connecting fault reader V.A.G 1551 and selecting control unit for engine electronics
• Testing and adjusting throttle valve potentiometer